Definition of promethea in US English:

promethea

noun

Entomology
  • In full "promethea moth". A large North American saturniid silk moth, Callosamia promethea, the male of which has dark brown wings with pale margins. Compare slightly earlier "Prometheus".

Origin

Mid 19th century. From scientific Latin promethea, specific name (in Phalaena promethea; D. Drury Illustr. Nat. Hist II. 18), feminine of classical Latin Promēthēus (adjective) of or associated with Prometheus from Promētheus.

Pronunciation

promethea

/prə(ʊ)ˈmiːθɪə/